Re: [clamav-users] Signature specifics (was Re: Malware/ransomware and Yara signatures with clamav)

2017-05-16 Thread Matthew Molyett
To follow up on what Kris said, yes you can create rules like this. We are unable to publish such broad rules in the official signatures because of the FPs that it will cause, but you are able to determine what should be blocked within your individual environment. PDFs with JavaScript, documents w

[clamav-users] Signature specifics (was Re: Malware/ransomware and Yara signatures with clamav)

2017-05-15 Thread Kris Deugau
Cedric Knight wrote: Devs - is it possible to block PDFs based on containing '/JavaScript' and '/OpenAction' (or '/Launch')? I wish ClamAV has a hierarchy from definite signatures first to secondly checking heuristics... Not a ClamAV developer, but yes, you can create a signature for this. Y